Exploring the phase diagram of lattice quantum gravity

Daniel Coumbe, John W Laiho

Research output: Contribution to journalConference article

Abstract

We present evidence that a nonperturbative model of quantum gravity defined via Euclidean dynamical triangulations contains a region in parameter space with an extended 4-dimensional geometry when a non-trivial measure term is included in the gravitational path integral. Within our extended region we find a large scale spectral dimension of Ds (σ → ∞) = 4.04 ± 0.26 and a Hausdorff dimension that is consistent with DH = 4 from finite size scaling. We find that the short distance spectral dimension is Ds (σ → 0) ≈ 3/2, which may resolve the tension between asymptotic safety and holographic entropy scaling.

Original languageEnglish (US)
JournalProceedings of Science
Volume139
StatePublished - Jan 1 2011
Externally publishedYes
Event29th International Symposium on Lattice Field Theory, Lattice 2011 - Squaw Valley, Lake Tahoe, United States
Duration: Jul 10 2011Jul 16 2011

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Exploring the phase diagram of lattice quantum gravity'. Together they form a unique fingerprint.

  • Cite this